chaos cards mtg Rakdos, Patron of Murders at Karlov Manor | Magic then reveals the top card of their library Reviving the Chaos Deck |

As a result, they can be removed prior to giving you any value

Yes, the Creature with the Impostor counter will get exiled, but that makes this an exceptional card for Token decks

Pair Perdita, Devoted Mother with some 2 cost characters that have abilities trigger when they enter play like Pinocchio, Talkative Puppet and youve got yourself an effective little recursion engine

That means a lot of the power levels are already known, but while a card may be exceptional in Modern, it could be unplayable in Commander

Sometimes you will need to keep a bad card on top that you would like to have scryed away simply to actually kill the thing